I've been very happy with my stay.
This is a family run small apartment block and the family are extremely friendly and welcoming.
There's a pool and although it's a little small for fitness it's great for cooling off.
The apartment is ample for 1 or 2 people. it's well proportioned, clean and well maintained.
Apartment overlooks a canal and the excellent Benchakitti park which is accessable at the bottom of Soi 4, 5 minutes walk, or a quick run.
The location is surrounded by residential homes and feels safe and secure.
Downside is you are close to Nana red light area so if this isn't your thing be aware that you will have to venture past this area to the main road.
Also all the eating places in the vicinity are geared towards the tourists visiting RL area. So you have to travel on the BTS to another area to get better food and supplies.
if your staying long term this can be a bit of an issue.
In summary, great value , good hosts , nice accomodation but Nana might not be right for all.